Control for transmissions



T. L. FAWICK `Filed sept. 1s, 1957 CONTROL FOR TRANSMI S S IONS Feb. 2l, 1939.

E f mu @ggf maar aan, '1939 p `um'risn STATE CONTROL FOR TBANSMISSIONS 'moms n rawick, Akron, 40in, signor u Industrial Clutch Company. Waukesha, Wis., a corporation of Wisconsin Application September 13, 1937, Serial No. 163,603 o 4 f nomma. (ciu- 413) The present invention relates generally to drive the driven shaft I2. The bevel pinions 25 powertransmission devices and is particularly are disposed on opposite sides of the bevel gear concerned with a new and improved control 26 so that when one ofthe clutches is'engaged, mechanism therefor. Y the gear 26 and the shaft l2 are driven in one l The principal object of the present invention direction, and when the other clutch is engaged 5 is the provision of a simple and sturdy control the bevel gear 26 and the shaft l 2are driven in unit for governing the shiftable part oi a powery the other direction. Since the driving clutch transmission, being particularly `adapt-,ed to eonparte 2l are rigidly secured to the axially mov- Vtrol a shiftable part that is movable in either able power Shaft' l5, Shifting the letter in One i f direction from a neutral position to an operatdirection or the other serves to engage onenf the 10 ing position. Afurther object of the present inclutches and disengage the other. Y vention is the provision of a new and improved The present invention is particularly concontrol unit for reversing mechanism and the cerned with the provision of a control unit for like, especially adapted toposition an axially shifting the movable transmission shaft l5 from l5 shiftable power shaft for governing the transone position to another, but the present inven- 15 mission of power to a driven part in one direction is not limited to any Derticulartype-cfpower tion or the other. y 1 transmission. Sueh 85 the lSi-Ia-ted 1li the These and other objects and advantages of ldrawinabut ma to other mms of the present invention will beapnarent to *besa/ttm controlled, wholly or in part, by a .,.Mrfrsi're n e art ter a consideration of the member that is moved from one position to an- 20 following detailed description of tine preferredhgtheriiowever, the present invention is espefV embodiment,I taken in Vconjunction with the aci Cillyeppnlcafble t0 transmissions having inmemcompanying drawing illustrating such ,embodiber movable in eitherdirection from a neutral Yment. i .position to an operating position. For example,

Figure 1 is a generally vertical section taken the principles of the present invention could be 26 through a control unit and reversing transmisarranged to control e marine reverse Sear ofthe sion embodying the principles of the present intype disclosed and Ommed .in my impending aD- vention, the section through the control, unit Dlieetion. Seria-l No. 11,505,"ii1ed March 16, 1935- being at a larger scale than the lsection through The control uniti which 1S indicated in its eny the reversing transmission; and tirety by the reference'numerai 35, for the trans- 80 Figure 2 is a Section taken albhgthe 11ne`122 mission l0 includes a casing 36, which may be a of Figure 1. Y A l part of the casing or the frame supporting the Referring now to the drawing, the reference liidii 25 and esseeated Darts mentlied above numeral I0 indicates-a power transmission unit ora Dart Sepel'e therefrom- One end 0f the eB-S- for transmitting power from a source of power, ing 36 is hanged, as at 31, so este be yattached 85 such as a motor il, to a driven memberl in the to a stationary support 38, and the other end form of a shaft l2 or the like adapted to be 0f the easing has an Opening 39 which is closed rotated in one direction or the other. The transby Diete l .Slidbly SlpDOrted OD the inside mission I0 is a reversing transmission and em- 0f the 6851118 35 1S' 91 member l in the OI'm 0f a 40 bodies a power shaft I5 slidably connected, as at toggle Casting which CGmDI'ISeS heads 01' ends l2 60 I8, with the motor Il so as to be capable of lim-` and Il connected by side wall portions Il and ited axial movement, and a pair of cone clutches l5 that are spaced apart laterally, 8S best Shown l! and 2B, each including a driving Vclutch part in Figure 2, and each of which is provided with 2|, ilxedly secured as at 22 in any suitable'mana central longitudinally disposedopening or cutl ner to the axially shiftable power shaft l5, and out portion I6.

a driven clutch part 23 Journaled for rotation in 4A shaft 50 is journaled fox-.rocking movement a suitable casing or frame 2li.v Each of the driven lin the casing 36 and one end of the shaft 50 exclutch parts 23 is securely fastened to or formed tends exteriorly of the casing,as at Il, and reintegral with a driving pinion 25.' The pinions I ceivesan operating lever'ilby which the shaft 25 are arranged for rotation about an axis that 50 may be rocked in one direction or the other. 50 coincides 'with the axis oi rotation oi.' the power The shaft 50 extends through the openings 46 shaft l5 and the latter is slidably mounted within in the casting Il, Iwhich are long enough to perthe sleeves on which the pinions 25 are carried. lmit the toggle casting member Il to be moved Both of the pinions are in mesh with a driven in one direction -or the other.

bevel gear 26 whichis secured to and serves to A plate 60 is fastened to the shaft 5|! in a po- I5 sA PATENT ori-ics sition between the planes of the sidewall porin one direction, say to. the left as viewed 1n tions 44, 45 by a set screw 6I or other suitable Figure l, causes the rocking member 60 to exert means, and the lever 54, together with the shaft a thrust through the toggle link 12 against the 50 and plate member 6U, constitutes a double- Din 'I8 Carried in the Castlng 4I. The latter is f the member 10 apertured to receive pivot pins 65 and 66 which transverse shaft 50 Movement o are heldin place by set screws 61 and 6a, respec- 4I toward the left exerts a pull through the tively. The pivot pins 65 and 66 receive the inner thrust bearing IIU against the end of the power end of oppositely extending connections in the shaft I5, and this causes the clutch to be enition 20 20 carried by brackets or lugs 8U suitably mounted s pos1t1on represents one operating pos on or formed integral with 1n the side wall por- 1n Which the Clutch 20 iS fully engaged and the tions 44 45 of the toggle casting 4I power transmitted from the source I I through I' posed in thej plane of the member 60 and serve since the clutch is entirely disengaged, such relato limit the movement thereof in either directive movement is accommodated. During the 30 tion and are adapted to be adjusted so that when swmglne movement of the lever 54 toward the or the other, left as viewed in Figure 1, which causes the slide connecting the pivot axes 65 and 66vand the airis of the shaft 35 operative po- However, this retreating movement of the link `sh1ftable 13 is accom odated by virtue of the sliding of 40 eng`ggig"ti"ferl -m e, Jt-te-the-piri 181 U- ,Y for driving the shaft I2 in such a construction is in the nature oi' a onefway isengaging ,the other` elutch.` crcmneeti0n`erwllostnnotion connectionfasix: Ii' desired, however, detent echanism may obvious.

also be mvidedsuh V'mechariisfr comprising a When the control lever 54 is swung away from 5 fee ng pressed or plunger ball 9| and a plurality its left-hand operative position back to a neutral of notches 92 formed in the lower portion of the position, and then to the right, as viewed in neutral position, and it is also useful in holding and then as soon as contact is established be- 50 ranged to control an axially shifatable power and effecting the disengagement of the right shaft, `such as the shaft I5 shown in Figure v u thrust bearing IIU, preferably bu ssarily 54 in the right hand d irection then causes the 55 of the double-row bali-ty s'mounted at one slidable member 4I to be shifted to the right,

end o VI' and the outer races III of which exerts a thrust againstthe left hand end e bearing H0 are carried in spherical ,bushing of the power shaft 50 andoauses the latter to be able halves I I5 and I I6 of a spherical socket 'are brings the driving member 2| of the clutch I9 into 60 in any suitable manner. `The head 43 or the therewith, toa standstill, and then as the lever 65 y which does not rotate, and the axially shiitable lei`t-hand clutch i9 are pressed into firm engageshaft I5, which does rotate, accommodates not ment, thereby picking up the load and rotating only the rotation of the latter but also any axial the bevel gear 2 and the shaft i2 in a direction 70 misalignment between the shaft I5 and the slidopposite to that in which it was rotated 'when able member 4I. the right-hand clutch 20 was engaged. When In operation, referring now to Figure l in the lever 54 reaches-its full right-hand position which the parts are arranged in their neutral the arm 64 of the member 59 is brought into cori- Position, swinging the control lever or handle I5@ tact 'with the stop 33, whereby the member Gi is rg;

(itil locked in its other operating position by the togele action of the arm S4 and the link 13. 'I'he notches 92 are so arranged that the spring pressed plunger 9| is fully engaged in one of them when the lever 64 is in its neutral or either oi" its oper ating positions.Y A

While I have described above the preferred construction in which the principles of the present invention have been embodied, it is to be understood that my invention is not to be limited to the specific details shown and described, but that, in fact, widely diierent means may be employed in the practice of the broader aspects of my invention.

y What -I claim, therefore, and desire to secure by Letters Patent is: 1. Control means for transmissions comprising `a part shiftabie in opposite directions from a neutral position, a pivoted control lever, and oppositely extending connections disposed between said lever and said part so that the latter is shifted in one' direction when the lever is swung in one direction and in the opposite direction when the lever is swung in the other direction.

2. Control means for transmissions comprising a` part shiftable in opposite directions from a neutral position, a pivoted control lever, and oppo-` site extending toggle' means disposed between said lever and said part and each having a lost motion connection with said part so that when the control lever is swung in either direction one of said toggle means exerts a force on said part to shift the same.

3. Control means for transmissions comprising a part shiftabie in opposite directions from a neutral position, a control lever pivoted for swinging movement adjacent said part and having means serving as oppositely disposed arms, and a toggle connection extending in opposite directions from said arms and connected with said part so that the latter is shifted when said lever is swung about its pivot.

4. Control means for transmissions having a member shlftabie in opposite directions from a neutral position, said means comprising a control lever, a slidably mounted toggle casting and operatively connected with said member, and oppositely extending toggle connections between said control lever and said toggle casting and arranged to shift the latter to and to hold the same in either of its operative positions.

ii. Control means for transmissions having a member shiftable in opposite directions from a neutral position, said means comprising a casing, a part slidably mounted therein and operatively connected with said member, a control lever, Voppositely extending toggle connections between said control lever and said siidable part and arranged to shift the latter to and to hold the same in either of its operative positions, and stop means cooperating with said controllever to establish an over-center locked position for each of said toggle connections. I

6. Control means for transmissions having a member shiftable in opposite directions from a neutral position, said means comprising a casing, a part slidably mounted therein; a coupling between said member and said part, a shalt jour nections between said double ended member and said part, and means for rocking said shaft.

7. Control means for transmissions comprising a part shiftable in opposite directions from a neutral position, a pivoted control lever, and members pivotally connected with said lever at the same side of the pivot axis thereof and extending in generally opposite directions therefrom, said members being pivotaily connected with said part so that the latter is shifted in one direction when the lever is swung in one direction and in the opposite direction when the lever is swung in the other direction, one of the pivotal connections of each of said members being in the nature of a lost motion connection.

8. Control means for transmissions having a member shiftable in opposite directions from a neutral position, said means comprising a casing, a part slidably mounted therein and having spaced'side wall portions with openings in the latter, a transversely disposed shaft 'iournaled in said casing and extending through said openings, an operating member having generally oppositely disposed arms lying between said spaced side portions, generally oppositely extending connections between the outer ends oi' said arms, respectively, and said siidable part, so that the latter will be shifted in one direction when said operating member is swung in one direction and in the opposite direction when the operating member is swung in the other direction, and an operating lever secured to said transverse shaft exteriorly oi' said casing.

9. Control means' for transmissions having a rotatable shaft shiftable in opposite directions, said control means comprising a generally stationary casing, a part shiftably mounted in the latter and having a rotatable connection with one end of`said shaft for shifting the latter axially. a transverse shaft journaled for rockingmovement in said casing, means serving as a pair of generally oppositely disposed arms fixed to said shaft, oppositely disposed connections extending between said arms and said siidable part, and means for rocking said shaft in one direction or the other for shifting said transmission shaft -in one direction or the other.

16. Control means for transmissions having a member shiftable in opposite directions from a neutral position, said means comprising-.a casing, a part siidably mounted therein, a member mounted for rocking movement in said casing about a transverse axis, and oppositely disposed links pivoted to said member and connected, respectively, with said siidable parts with a one-way connection, whereby said siidable part can be moved in one direction or the other by a rocking movement of said member in one direction or the other.

il. Control means for transmissions having a member shiftable in opposite directions from a neutral position, saidmeans comprising a casing, a part slidably mounted therein and carrying spaced pins,l a rocking member. disposed between said pins, and generally oppositely disposed links pivoted to said rocking member, each of said links having a fork at its outer end embracing the associated pin and adapted to act therethrough to shift saldsiidable part in one direction.

THOMAS L; FlWICK. 

